Hi everyone!!! Please help me... This is my first grow and they're not doing so well...im growing white widow... Hydro...I have reservoir system lights 18/6 600wt mh...using half strength nute... Room is well vented fresh constantly lights 18" from tops of plants... Plants are leaning the little leaves turning yellow... Watering 2-3 times daily.... Please help is there anything I can do to save the... They're growing rely slow please help